Sheet-metal studding.



v PATENTBD MAR. 's, 1904. H. WITTEKIND & R. E. BOURKE.

SHEET METAL STUDDING. APPLICATION FILED my 27, 1903.

N0 MODEL.

z'zne ssa 1' iatented I i arch 8 1904 UNITED STATES PATENT OFFrcE.

- HENRY wirrnmnn AND ROBERT E. BOURKE, or CHICAGO, ILLINOIS.

SHEET-METAL STUDDING- SPEGIFICATIOK forming part of Letters Patent No.754,270, dated March 8, 1904. v

' Application filed May 27,1903. Serial a... 158,920. (a. model.)

To all whom it may concerm Be it known that we, HENRY WITTEKIND andROBERT ,E. BOURKE, citizens of the United 'States, residing at Chicago,county of Cook,

State of Illinois, have invented a certain new and useful Improvement inSheet-Metal Studding; and we declare the following to bee. full,

clear, and exact description of the invention,

I such as will enable others skilled in the art to which it pertains tomake and use the same, reference beinghad to the accompanying drawings,

Our invention relates in general to members used in the erection ofbuildings-such as roofjoists, floor-joists, scantling, or studdingandmore particularly t5 sheet-metal building members. v

In order that buildings may be thoroughly fireproof, it is desirable touse in their construction metallic joists and studding and to secure tothe studding metallic lathing upon which the plaster is supported. Theemploydered it necessary that provision be made for ment of metalstudding, and lathing has renenabling the lathing to be readily andsecurely fastened to the studding.

The primary object of our invention is to provide a metallic buildingmember to which the lathing or other structural members may be l'eadilyand securely fastened by the use of nai s. 1 a

A further object of our invention is to provide a building membercomposed of sheet metal which willbe light and simple in construction,inexpensive in manufacture, and

strong and durablein use.

, 'Our invention, generally described, consists in a building memberformed of sheet metal the web of which comprises two or more thicknessesof metal between which at one edge an additional thickness of metalextendsa short distance, thereby enabling nails to be driven between thetwo thicknesses of the web and retained therein through engagement ofthe edge of Y the inwardly-extending short thickness with the nails, thelatter being preferably barbed to render such engagementpositive andsecure.

Our invention will be more fullydescribedhereinafter with reference tothe accompanying drawings, in which the same is illustrated which form apart of this specification;

such, for-instance, as rivets 0.

cal forms, and in which as embodied in several convenientand practi- 1Figure 1 is a cross-section of a member comprising a web andoppositely-extending flanges at each end thereof; Fig. 2, across-section of a member in Y which oppositely e extending flanges areprovided only at one end of the web; Fig. 3,- a view similar to Fig. 1,in which the two parts composing a member are reinforced bychannel-beams; Fig. 4, a cross-section of a member in which a singleflange is provided extending inone directionfrom one end of the web;Fig. 5, a View similar to Fig.

4, in which a single flange extends from each end of the web and in thesame direction; and

Fig. 6, a view similar to Fig. 5, in which a single flange is providedat each end of the web, such flanges extending in opposite direc: tions.

Similar reference characters are used to indicate similar parts in theseveral figures of the drawings.

. Reference characters A and B, referring particularly to Fig. 1,indicate two similar parts united by means of rivets c to form thebuilding'member. The part A of the member comprises a web at the endsofwhich extend in the same direction flanges a a, formed of twothicknesses of metal, such thicknesses being bent around-and lyingadjacent tothe .web, as indicated at a a. The part B is simi-' lar tothe part A and consists in a web at the opposite ends of which extendflanges b 12, formed of two thicknesses of metal, which extend aroundthe web a short distance,as shown atbb.

D indicates a nail driven between the two thicknesses of the web of themember shown in Fig. 1 for the purpose of securing lathing or otherstructural members. The nail is shown as barbed, thereby renderingit'sretention between the two thicknesses of the web secure and positivethroughthe engagement of the barbs with the edges of theinwardlyextending-thicknesses of metal a and b. I

In-Fig. 2, A

and B indicate the two parts of-the building member, which are securedtogether by any suitable fication flanges a? and b extend in oppositefastening devices- -11), thismodil of the web. The webs a and F are, asin Fig.

I tween the two parts of thewebto form nail-re- 1, made of twothicknesses of metal which terminate between the two parts of the web toform short thicknesses of metal a and b, the edges of which retain thenails in position.

The modification shown in 3 is similar to that shown in Fig. 1 exceptthat reinforc ing channel-bars E and F are surrounded by the metalcomposing the two parts A and B These channel-bars need not of themember. necessarily-be whatare technically known as channel-beams, butmay be thinsu ch, for instance, as sheet metal bent to the channel'form. The oppositely-extending flanges a" our invention, in whichthemember consists form nail-retaining edges. 2

of two parts A and A, united by rivetsjc to form a web between whichnails may be driven. ,Only-one of the partsnamely, B is provided withaflange b. Inwardly-e x what we claim'as new, and desire to securejibyLetters Patent, is-

tending thicknesses of metal are, however, provided between the twopartsgof the web'to In Fig. 5 we have illustrated a modification similarto Fig. 4 except-that parallel flanges b extend in the same directionfrom the oppor hers "are adapted tzbe' driven, the opposite.

site ends of the member B. The member-A is, however, provided withinturned thick-' nesses of metal which cooperate with inturnedthicknesses of metal to form nail-retaining" e s The embodimentof ourinvention shown in Fig. 6 consists in two parts A and B, united byrivets a to form a web composed of two thicknesses, at each end ofwhichis located a flange,such flanges a and 6' extending in op positedirections. As in the other 'embodiments of our invention, shortinturned thicknesses of metal extend between the two thicknesses of theweb to form nail-retaining edges.

" The mannerof usingour invention will be readily understood by thoseskilled in'the art from the foregoing description. The member is securedin" the desired position in the building and in the desired relationwith the other cooperating members. Thelathing or other structuralmembers may then be readily se-- cured to our improved building'memberby merely driving nails through the-lathing and between the twothicknesses of the web, the nails being of such .alength that theendsthereof project inwardly beyond the retaining "edges of theinturnedjshort thicknesses of' metal, and are thereby securely lockedbetween the parts of "the web. The twoIthicknesses of the web may beclosely by means of the rivets without preventing the driving of nailsbetween the same, inasmuch as the distances between the rivets are suchthat the resiliency oi the metal permits'the separation of the twothicknesses sufliciently to enable the nails to be driven between the Itisevident from the foregoing description that we have invented animproved sheet-metal building member which is light andat the v sametime strong structurally and which contains provision. for the readyattachment thereto by the use of V nails, staples, or other fasteningdeviceslathing orother cooperating structural members. a

While we have illustrated anumber-of embodiments of our invention, we donot wish to be understood as limiting'ourselves thereto,

as the invention is capable of a variety ofembodiments. We consider anysheet-metal 1 building memberas coming within the scope of our.invention which consists in a web I formed of two thicknesses of metalbetween which at one end extends an addition'aLshort thickness ofmetahthereby forming aretain ping edge toengage a nail or otherfastening device driven between the time thicknesses of y 1 i -Havingnow fully. described our invention,

1. A sheet-metal building member comp rise "ing a web formed of twoparts rigidly united tog'ether between which fastening devices forsecuring thereto cooperating .building memedgesof one of said artsterminating in portions extending in ardly, between the two partscomposing theweb, the edges of such portions adapted to engage andretain the fas- TOO tening devices between the two parts of the 7 web. 1a

2. A sheet-metal building member comprising a .web formed of two partsrigidly united togethen between which fastening devices for securingthereto cooperating building membersare-adapted to be inserted, theopposite ends of each part terminating in portions extending inwardlybetween the two parts composing 'the web, thereby forming locking Vedges at each end of the webto retain therein the inserted fasteningdevices.

' 3. Asheet-metalbuildingmember comprise ing a' web formed of two partsrigidly riveted together, a flange formed at each'end of each part ofsaid web each of said flanges com osed terminating in a portionextending inwardly of a plurality, of thicknesses of metal an eachbetween the two parts of the web thereby forming locking edges at eachend of the web to retain fastening devices therein.

In testimony whereof we sign this specifica: I

tion in the presence of two witnesses.

.ROBERT E. r

